Astronomy

Arches of solar plasma

Strengthen a magnetic field and heat the plasma. Follow bright tracers along closed coronal loops and compare magnetic with gas pressure.

Actual application image

The model and its limits

Prescribed loop geometry with pressure and Alfvén-speed diagnostics. This is not a magnetohydrodynamic eruption or a prediction of space weather.

Equations used in the module

Equations
p_B = B²/(2μ₀); β = 2nkT/p_B; v_A = B/√(μ₀nm_p)

Astronomy

Choose a spherical oscillation mode. Watch the nodes stay still while opposite regions move in opposite directions.

Astronomy

Cool or compress a molecular cloud. Compare its mass with the Jeans mass and follow the pressureless collapse clock when gravity wins.

Astronomy

Expand a shock through interstellar gas. Increase the explosion energy or ambient density and compare the shock radius and speed.